I have a 94 Z with an LT1 tryi9ng to figure out if the Dart 190cc 63cc combustion chamber heads are better than the LT4 heads from GM Performance. seems the heads from GM have a lower combustion chamer CC than the stock LT1 heads . I know this might be ignorant but please does someone know that can help me out.
Thanks
KinkDadz28

 

Try posting it in the LT1 engine tech forum for a start.

 

I was not aware dart made lt1 style heads